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According to NCS Consulting, Snam?progetti Company filed this patent as early as five years ago for the production of styrene process technology using benzene and ethane as raw materials. The main process of the process is that ethane is fed into a dehydrogenation reactor together with ethylbenzene produced from the alkylation unit. The reactor is packed with a silica-modified alumina carrier containing cerium, platinum and potassium. catalyst. After the reaction, styrene and ethylene are produced, and ethylene is recycled into the alkylation unit.
The Dow Chemical Company currently employs a styrene production process that reacts ethylene with benzene to produce ethylbenzene, which is then dehydrogenated to styrene in the presence of an iron catalyst. It is said that the new process can greatly reduce the cost of production because the price of ethane is much lower than the price of ethylene. However, SRI Consulting has disagreed with this. It believes that the separation of ethane and ethylene from the dehydrogenation system in the new process and the cost of recycling will offset the price difference between ethane and ethylene.
The head of the SRI business pointed out that according to the current price difference between ethylene and ethane on the Gulf Coast of the United States, the adoption of a new process along the US Gulf Coast will only guarantee no loss. Dow Chemical apparently intends to use this process in the Middle East because the price of ethane in the Middle East is 90% cheaper than the price of ethane on the Gulf Coast of the United States, which can reduce the raw material cost of styrene by 16%. Benzene-based benzene The total cost of the ethylene process will be approximately 10% lower than the ethylene feed route.
According to the US "Chemical Weekly" report last week, Dow Chemical and the engineering subsidiary of Italy's Eni company Snamprogetti announced that the two sides are working together to promote the commercialization of styrene production technology using benzene and ethane as raw materials developed by Snamprogetti. Process. At present, they have made major breakthroughs in improving the catalyst and reactor technology. By optimizing the device design, it is expected that the process will be put into commercial application by 2010.